I haven't yet read through the entire thread so pardon my ignorant post (which I'll remove if it proves redundant).
If/ when we get to redoing the neck I hope we can strike a balance between:
- the 'southern US states' inspired canon (alligators, snakes,
fungus covered half-drowned trees)
- the 'north north-west British isles' inspired canon (crannogs, geographical similarity to the real UK)
- its creation myth
- and its geomorphological relevance as THE source and major watershed of the green fork of the trident.
I see a conflict in the fact that swamps typically occur in
areas of low topographic relief towards the lower sections of larger rivers (eg. Amazonas, Mississippi) or lakes, and the fact that the neck must be in an area of high relief to support the current flow of the Green Fork. Raised
bogs and
fens (which really only differ in their nutrient content) could occur at the required relatively higher
elevation needed to ensure a southward flow of the Green Fork, and would match the position of Westeros in the Northern Hemisphere. However, raised bogs and fens
can't support the dense growth of tall trees that we currently have in our rendition of the Neck (and which I believe is strongly hinted at in the canon, which would need to be verified). A wetland landform that supports inundated, dense, tall trees is a
carr or
Bruchwald, which only works for us if we can argue that the surface is permanently close to the ground-water table. All of this, of course, ignores the fact that the preferred body temperature of Alligators is between
29 to 34 degrees Celsius, which doesn't make a whole lot of sense geographically for that part of Westeros.
“'I need two of your longships to sail around the Cape of Eagles and up the Neck to Greywater
Watch’...’A dozen streams drain the wetwood, all shallow, silty, and uncharted. I would not even call them
rivers. Te channels are ever drifting and changing. Tere are endless sandbars, deadfalls, and tangles of
rotting trees. And Greywater Watch moves. How are my ships to find it?’...’Go upriver flying my banner.
The crannogmen will find you.’”
This quote makes me think that the waters of the Neck are raised higher than sea level (
unlike our current terraforming). Furthermore, it is either a region of recurring rainfalls or riddled with subterranean sources of water which drain in all directions (south as the Green Fork, north as the Fever River)
tl:dr: The neck don't make sense, yo.